Wanted to fly BOM-NAG, left his hand baggage and boarding pass behind at the gate, and still got past the 9W gate staff, CISF "check boarding pass and hand baggage stamps" guy and the 9W staff checking BPs at the flight door.
Sat down in some random guy's seat and when the actual flyer showed up, the FA just told the guy to sit wherever there was an empty seat. Didn't even bother with a headcount (lightly loaded flight I guess).
The guy finally figured out he boarded the wrong flight after he landed and walked into the wrong airport.
http://m.timesofindia.com/india/Flye...w/34304923.cms